In the present study we assayed the antioxidant activity of lipophilic extracts obtained from different tomato varieties. The results showed that cherry tomatoes, characterized by a high carotenoid content, had the highest antioxidant activity. A quantitative analysis of lycopene, b-carotene, lutein and a-tocopherol was also performed and the correlation between the antioxidant content and the antioxidant activity was estimated. The highest correlation coefficient was found for lycopene (R2=0.9236,P< 0.001). The analysis of two-component mixtures containing a-tocopherol and carotenoids showed that significant synergism occurred for all the combinations which contained a-tocopherol and b-carotene mixed together. The highest synergistic effects were detected for a-tocopherol-lycopene mixtures, which were the most efficient combinations tested in the present study. The analysis of the carotenoid combinations indicated that synergism occurred for lycopene-b-carotene, lycopene-lutein and lutein-b-carotene mixtures. The analysis of four-component mixtures did not show statistically significant synergistic effects.

Zanfini, A., Corbini, G., LA ROSA, C., & Dreassi, E. (2010). Antioxidant activity of tomato lipophilic extracts and investigationon interactions between carotenoids and alpha-tocopherol in synthetic mixtures. LEBENSMITTEL-WISSENSCHAFT + TECHNOLOGIE, 43, 67-72 [10.1016/j.lwt.2009.06.011].

Antioxidant activity of tomato lipophilic extracts and investigationon interactions between carotenoids and alpha-tocopherol in synthetic mixtures

ZANFINI, ASSUNTA;CORBINI, GIANFRANCO;LA ROSA, CATERINA;DREASSI, ELENA
2010

Abstract

In the present study we assayed the antioxidant activity of lipophilic extracts obtained from different tomato varieties. The results showed that cherry tomatoes, characterized by a high carotenoid content, had the highest antioxidant activity. A quantitative analysis of lycopene, b-carotene, lutein and a-tocopherol was also performed and the correlation between the antioxidant content and the antioxidant activity was estimated. The highest correlation coefficient was found for lycopene (R2=0.9236,P< 0.001). The analysis of two-component mixtures containing a-tocopherol and carotenoids showed that significant synergism occurred for all the combinations which contained a-tocopherol and b-carotene mixed together. The highest synergistic effects were detected for a-tocopherol-lycopene mixtures, which were the most efficient combinations tested in the present study. The analysis of the carotenoid combinations indicated that synergism occurred for lycopene-b-carotene, lycopene-lutein and lutein-b-carotene mixtures. The analysis of four-component mixtures did not show statistically significant synergistic effects.
Zanfini, A., Corbini, G., LA ROSA, C., & Dreassi, E. (2010). Antioxidant activity of tomato lipophilic extracts and investigationon interactions between carotenoids and alpha-tocopherol in synthetic mixtures. LEBENSMITTEL-WISSENSCHAFT + TECHNOLOGIE, 43, 67-72 [10.1016/j.lwt.2009.06.011].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11365/21596
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